WO2012065407A1

WO2012065407A1 - Multicast message control method and apparatus

Info

Publication number: WO2012065407A1
Application number: PCT/CN2011/073607
Authority: WO
Inventors: 武云飞; 冉文军; 毛彪
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-11-19
Filing date: 2011-05-03
Publication date: 2012-05-24
Also published as: CN102468966B; CN102468966A

Abstract

The present invention discloses a multicast message control method, which includes: receiving a multicast protocol message transmitted by a user terminal (S101); judging whether the version of the multicast protocol message is Internet Group Management Protocol version 3 (IGMPv3)/Multicast Listener Discover version 2 (MLDv2) (S102); if not, converting the version of the multicast protocol message to IGMPv3/MLDv2 according to a preset control table item (S103); if yes, updating multicast source addresses of the multicast protocol message (S104). Alternatively, the method includes: receiving a multicast group query protocol message; judging whether there is a user terminal joining the multicast group; if yes, judging whether the version of the multicast group query protocol message is consistent with the version of a multicast group join protocol message transmitted by the user terminal; if not, converting the version of the multicast group query protocol message to the version of the multicast group join protocol message; transmitting the converted multicast group query protocol message to the user terminal. The present invention also discloses a multicast message control apparatus for implementing the above-mentioned method. The compatibility of multicast services for user terminals is improved.

Description

Multicast message control method and device

The present invention relates to multicast technologies, and in particular, to a multicast message control method and apparatus. Background technique

As an important bearer of IPTV (Internet Protocol Television) services, multicast technology has a wide range of applications. At present, the passive optical network is the main form of the access network device, and the multicast data packet on the passive optical network device, such as the optical line terminal (OLT, Optical Line Terminal) and the optical network unit (ONU, Optical Network Unit) Distribution control is performed through an Internet Group Management Protocol (IGMP) or a Multicast Listener Discovery Protocol (MLD). At present, most of the user terminals (STB, Set Top Box, Personal Computer, etc.) cannot support the multicast source address filtering function of multicast data packets, resulting in the inability to implement multicast data packets. Secure forwarding. Summary of the invention

The main purpose of the present invention is to provide a method and apparatus for controlling multicast packets, which improves the secure forwarding of multicast data packets.

The present invention provides a method for controlling multicast packets, which includes the steps of:

Receiving a multicast protocol packet sent by the user terminal;

Determining whether the multicast protocol version is IGMPv3/MLDv2;

If not, the version of the multicast protocol packet is converted to IGMPv3/MLDv2 according to the preset control table entry.

If yes, the multicast source address in the multicast protocol packet is updated according to the preset control table entry. Preferably, the method for controlling the multicast message further includes the following steps:

The converted multicast protocol or the updated multicast protocol is sent to the core network. Preferably, after receiving the multicast protocol sent by the user terminal, the method further includes: configuring a local multicast data forwarding table.

Preferably, after the sending the converted multicast protocol message or the updated multicast protocol message to the core network, the method further includes:

The received multicast data packet is forwarded according to the local multicast data forwarding table.

Preferably, the multicast protocol is: Joining a multicast group protocol or leaving a multicast group protocol.

The present invention further provides an apparatus for controlling multicast packets, including:

a first receiving module, configured to receive a multicast protocol packet sent by the user terminal;

a first determining module, configured to determine whether the version of the multicast protocol packet is

IGMPv3/MLDv2;

The first conversion module is configured to convert the multicast protocol packet version to IGMPv3/MLDv2 according to the preset control table entry when the multicast protocol packet version is not IGMPv3/MLDv2;

The update module is configured to update the multicast source address in the multicast protocol packet according to the preset control table entry when the version of the multicast protocol packet is IGMPv3/MLDv2.

Preferably, the apparatus for controlling the multicast packet further includes:

The first sending module is configured to send the converted multicast protocol message or the updated multicast protocol message to the core network.

A configuration module is configured to configure a local multicast data forwarding table.

The forwarding module is configured to forward the received multicast data packet according to the local multicast data forwarding table. Preferably, the multicast protocol is: adding a multicast group protocol or leaving the multicast group association The discussion is written.

The present invention further provides a method for controlling multicast packets, which includes the steps of:

Receive multicast group query protocol ^艮文;

Determine whether there is a user terminal that joins the multicast group;

If yes, it is determined whether the multicast group query protocol version is consistent with the version of the multicast group protocol message sent by the user terminal;

If they are inconsistent, the version of the multicast group query protocol is converted to the version of the multicast group protocol packet.

The translated multicast group query protocol packet is sent to the user terminal.

Preferably, after determining whether the version of the multicast group query protocol is consistent with the version of the multicast group protocol protocol message sent by the user terminal, the method further includes:

If the packets are consistent, the multicast group query protocol packet is sent to the user terminal.

If the parts are consistent, the version of the multicast group query protocol is translated into a multicast group protocol that is inconsistent with the version of the multicast group query protocol.

The multicast group query before the conversion is sent to the user group that joins the multicast group protocol. The version of the message is the same as that of the multicast group.

The translated multicast group query protocol is sent to the user group that joins the multicast group protocol. The version of the multicast group and the multicast group query protocol are inconsistent.

a second receiving module, configured to receive a multicast group query protocol packet;

The second judging module is configured to determine whether there is a user terminal that joins the multicast group; and when there is a user terminal that joins the multicast group, determine the version of the multicast group query protocol and the join multicast group protocol sent by the user terminal. Whether the packet version is consistent; The second conversion module is configured to convert the version of the multicast group query protocol to the join multicast group protocol when the version of the multicast group query protocol packet is inconsistent with the version of the join multicast group protocol sent by the user terminal. ^艮文 version;

The second sending module is configured to send the converted multicast group query protocol packet to the user terminal. Preferably, the second sending module is further configured to send the multicast group query protocol to the multicast group query protocol packet when the multicast group query protocol packet version is consistent with the version of the join multicast group protocol sent by the user terminal. User terminal.

Preferably, the second conversion module is further configured to: when the version of the multicast group query protocol message is consistent with the version of the multicast group protocol that is sent by the user terminal, the version of the multicast group query protocol is Converted to a multicast group protocol version that is inconsistent with the multicast group query protocol version;

The second sending module is further configured to: send the multicast group query message before the conversion to the user terminal that is added to the multicast group protocol version and the multicast group query protocol version; and The multicast group query protocol is sent to the user terminal that is added to the multicast group protocol and whose version is inconsistent with the multicast group query protocol >3⁄4 version.

It can be seen that the method and the device for controlling the multicast packet provided by the present invention ensure that the user terminal receives the multicast data packet of the preset multicast source by converting the multicast protocol packet before sending it to the core network. The security of the multicast service is improved. At the same time, the multicast protocol packet is converted to a protocol version format that can be correctly processed by the user terminal before being sent to the user terminal, thereby improving the compatibility of the multicast service of the user terminal. DRAWINGS

1 is a flowchart of an embodiment of a method for controlling multicast packet according to the present invention;

2 is a schematic structural diagram of a preset control table entry of the present invention;

3 is a schematic structural diagram of an apparatus for controlling multicast packet according to an embodiment of the present invention; FIG. 4 is another schematic structural diagram of an apparatus for controlling multicast packet according to the present invention; 5 is another schematic structural diagram of an apparatus for controlling multicast packet control according to the present invention; FIG. 6 is another schematic structural diagram of an apparatus for controlling multicast packet control according to the present invention; A flowchart of an embodiment of a multicast packet control method. FIG. 8 is a schematic structural diagram of another embodiment of a multicast packet control apparatus according to the present invention. detailed description

It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to FIG. 1 , an embodiment of a method for controlling multicast packet according to the present invention is provided. The method includes: Step S101: Receive a multicast protocol packet sent by a user terminal.

Step S102: Determine whether the version of the multicast protocol is IGMPv3/MLDv2.

Step S103: If not, converting the version of the multicast protocol message to IGMPv3/MLDv2 according to the preset control table entry;

Step S104: If yes, update the multicast source address in the multicast protocol packet according to the preset control table entry.

Referring to FIG. 2, the preset control table entry includes: a multicast group address list, a multicast source address list, and a multicast source address filtering mode list. The preset control table entries are configured through one or more network management protocols, such as OAM (Operation Passage Optical Network) operation, management and maintenance (OAM), Gigabit-free Source Network Protocol (GPON, Gigabit Passive Optical Network) Optical network unit management and control interface (OMCI, ONU Management and Control Interface), TR069 or Simple Network Management Protocol (SNMP) network management protocol. In the preset control table entry, each multicast group address corresponds to one or more multicast source addresses. There are two types of multicast source address filtering modes, which can be represented by "INCLUDE" or "EXCLUDE". The INCLUDE multicast source address filtering mode is that the multicast group can only receive data packets from its corresponding multicast source address. EXCLUDE Multicast source The address filtering mode is that a multicast group can only receive data packets except for multicast source addresses other than its corresponding multicast source address. The specific multicast source address and filtering mode are configured through the network management protocol.

The above versions of the multicast protocol include the following: IGMPvl, IGMPv2, IGMPv3, MLDvl, and MLDv2. In the above embodiment, when the multicast protocol version is IGMPv1 or IGMPv2, it is converted to IGMPv3. When the version of the multicast protocol packet is MLDv1, it is converted to MLDv2. The multicast protocol packets of the IGMPv1, IGMPv2, and MLDv1 contain only specific multicast group addresses and do not contain specific multicast source addresses. The multicast protocol version IGMPv3 and MLDv2 contains specific multicast group addresses and multicast source addresses corresponding to multicast group addresses.

Therefore, when the multicast protocol packet version is not IGMPv3/MLDv2, the version of the multicast protocol packet is translated to IGMPv3/MLDv2. The specific processing is as follows: According to the received multicast protocol, the multicast group address in the packet is The multicast source address and the filtering mode are searched for in the control table entry, and the discovered multicast source address and filtering mode are added to the multicast protocol packet.

The multicast source address and the filtering mode are searched for in the preset control table entry. The multicast group address is searched according to the configured multicast group address. If the multicast group in the multicast protocol packet is found in the preset control table entry. If the multicast source address and the filtering mode of the address match, the discovered multicast source address and filtering mode are added to the multicast protocol.

In addition, when the version of the received multicast protocol packet is IGMPv3/MLDv2, which includes the multicast group address and the multicast source address, but the multicast source address and the corresponding multicast source address in the preset control table entry. The multicast source address in the multicast protocol packet is updated to the multicast source address corresponding to the preset control table entry.

The multicast group address is an IP address, and the multicast source address is a multicast source IP address.

Further, the foregoing method for controlling the multicast packet further includes the following process: sending the converted multicast protocol or the updated multicast protocol to the core network. Further, in the foregoing method for controlling the multicast packet, the receiving the multicast protocol packet sent by the user terminal further includes the following processing: configuring a local multicast data forwarding table.

The local multicast data forwarding table includes: a multicast group IP address and a multicast source IP address and corresponding network interface contents; and/or a multicast group MAC address and a multicast source MAC address and corresponding network interfaces thereof content.

Further, in the foregoing method for controlling the multicast packet, after the converting the multicast protocol packet or the updated multicast protocol packet to the core network, the method further includes the following processing: according to the local multicast data. The forwarding table forwards the received multicast data packet. That is, according to the received multicast data, the multicast group address and the multicast source address in the message, and the network interface corresponding to the multicast group address and the multicast source address are searched in the multicast data forwarding table, and then the group is The broadcast data is forwarded to the corresponding network interface.

The network interface corresponding to the multicast group address and the multicast source address may be searched according to the multicast group IP address and the multicast source IP address in the multicast data forwarding table, that is, the multicast data is searched for. 4) The network interface corresponding to the multicast group IP address and the multicast source IP address, and then forward the multicast data packet to the corresponding network interface.

In addition, the network interface corresponding to the multicast group address and the multicast source address may be searched according to the multicast group MAC address and the multicast source MAC address in the multicast data forwarding table, that is, the multicast and the multicast are searched. The network interface corresponding to the multicast group MAC address and the multicast source MAC address in the data packet, and then forwards the multicast data packet to the corresponding network interface. To find the corresponding network interface in this way, you need to modify the source MAC address in the multicast data packet according to certain mapping rules. Then, the multicast data forwarding table is searched for a network interface corresponding to the multicast group MAC address and the modified source MAC address.

The multicast data includes the multicast source IP address and the modified source MAC address. The mapping rules described above have multiple modes, such as: One is to use the source MAC address in the multicast data packet. The last 23 bits are changed to the last 23 bits of the multicast source IP address; the other is to multicast data packets. The last 32 bits in the middle source MAC address are changed to the last 32 bits of the multicast source IP address. Further, in the foregoing method for controlling multicast information, the multicast protocol text is: adding a multicast group protocol or leaving a multicast group protocol.

In this embodiment, by determining whether the version of the multicast protocol packet sent by the user terminal is IGMPv3/MLDv2, the multicast protocol packet whose version is not IGMPv3/MLDv2 is converted into IGMPv3/MLDv2, that is, the multicast protocol packet is added. Specifies the multicast source address to ensure the security of multicast data packet forwarding.

Referring to FIG. 3, an apparatus 10 for implementing multicast packet control according to the present invention includes: a first receiving module 11, a first determining module 12, a first converting module 13, and an updating module 14. The first receiving module 11 is configured to receive a multicast protocol packet sent by the user terminal. The first determining module 12 is configured to determine whether the version of the multicast protocol packet is IGMPv3/MLDv2. The first conversion module 13 is configured to convert the multicast protocol packet version to IGMPv3/MLDv2 according to the preset control table entry when the multicast protocol packet version is not IGMPv3/MLDv2. The update module 14 is configured to update the multicast source address in the multicast protocol packet according to the preset control table entry when the version of the multicast protocol packet is IGMPv3/MLDv2.

Referring to FIG. 2, the preset control table entry includes: a multicast group address list, a multicast source address list, and a multicast source address filtering mode list. In the preset control table entry, each multicast group address corresponds to one or more multicast source addresses. There are two types of multicast source address filtering modes, which can be represented by "INCLUDE" or "EXCLUDE". The INCLUDE multicast source address filtering mode is that the multicast group can only receive data packets from its corresponding multicast source address. EXCLUDE The multicast source address filtering mode is that a multicast group can only receive data packets except for multicast source addresses other than its corresponding multicast source address. The specific multicast source address and filtering mode are configured through the network management protocol.

The above versions of the multicast protocol include the following: IGMPvl, IGMPv2, IGMPv3, MLDvl, and MLDv2. In the above embodiment, when the multicast protocol version is IGMPvl or IGMPv2 converts it to IGMPv3. When the version of the multicast protocol packet is MLDv1, it is converted to MLDv2. The multicast protocol packets of the IGMPv1, IGMPv2, and MLDv1 contain only specific multicast group addresses and do not contain specific multicast source addresses. The multicast protocol version IGMPv3 and MLDv2 contains a specific multicast group address and a multicast source address corresponding to the multicast group address.

Therefore, when the version of the multicast protocol packet received by the first receiving module 11 is not IGMPv3/MLDv2, the version of the multicast protocol packet is converted to IGMPv3/MLDv2 by the first converting module 13, and the processing is as follows: The multicast group address in the multicast protocol is searched for the multicast source address and filtering mode in the preset control table entry, and the discovered multicast source address and filtering mode are added to the multicast protocol packet. in.

The multicast source address and the filtering mode are searched for in the preset control table entry. The multicast group address is searched according to the configured multicast group address. If the multicast group address in the multicast protocol packet is found in the preset control table entry. The matched multicast source address and filtering mode are added to the multicast protocol packet.

In addition, the version of the multicast protocol packet received by the first receiving module 11 is IGMPv3/MLDv2, which includes the multicast group address and the multicast source address, but the multicast source address corresponds to the preset control table entry. The multicast source address is not necessarily the same. The multicast source address in the multicast protocol is updated to the multicast source address corresponding to the preset control table entry.

Further, referring to FIG. 4, the apparatus 10 for controlling the multicast packet further includes a first sending module 15. The first sending module 15 is configured to send the converted multicast protocol packet or the updated multicast protocol packet to the core network.

Further, referring to FIG. 5, the apparatus 10 for controlling the multicast packet further includes a configuration module 16. The configuration module 16 is configured to configure a local multicast data forwarding table.

The local multicast data forwarding table includes: a multicast group IP address and a multicast source IP address, and a pair thereof The content of the network interface;

In addition, the local multicast data forwarding table may also be a multicast group MAC address and a multicast source MAC address and corresponding network interface contents.

Further, referring to FIG. 6, the apparatus 10 for controlling multicast packet control further includes a forwarding module 17. The forwarding module 17 is configured to forward the received multicast data packet according to the local multicast data forwarding table. The forwarding module 17 searches for the multicast source address and the multicast source address in the multicast data forwarding table according to the multicast group address and the multicast source address in the multicast data packet received by the first receiving module 11. The network interface then forwards the multicast data message to the corresponding network interface.

The multicast data includes the multicast source IP address and the modified source MAC address. The mapping rules described above have multiple modes, such as: One is to source the MAC address in the multicast data packet. The last 23 bits are changed to the last 23 bits of the multicast source IP address. The other is to change the last 32 bits of the source MAC address in the multicast data packet to the last 32 bits of the multicast source IP address. .

Further, in the embodiment of the apparatus 10 for controlling the multicast packet, the multicast protocol packet is: adding a multicast group protocol or leaving a multicast group protocol. In this embodiment, it is determined whether the version of the multicast protocol packet sent by the user terminal is

IGMPv3/MLDv2 converts the multicast protocol packets whose version is not IGMPv3/MLDv2 to IGMPv3/MLDv2. That is, the multicast source address is added to the multicast protocol packet to ensure the security of multicast data packet forwarding.

Referring to FIG. 7, an embodiment of another method for controlling multicast packets according to the present invention includes the following steps:

Step S201: Receive a multicast group query protocol.

Step S202: Determine whether there is a user terminal that joins the multicast group.

Step S203: When there is a user terminal that joins the multicast group, determine whether the version of the multicast group query protocol packet is consistent with the version of the multicast group protocol packet sent by the user terminal.

Step S204: When the multicast group query protocol version is inconsistent with the version of the multicast group protocol text sent by the user terminal, the multicast group query protocol version is converted to the version of the multicast group protocol. ;

Step S205: Send the converted multicast group query protocol packet to the user terminal.

The versions of the multicast query protocol packets include the following: IGMPvl, IGMPv2, IGMPv3, MLDvl, and MLDv2.

Further, in another embodiment of the method for controlling the multicast packet, the method further includes: after determining whether the version of the multicast group query protocol is the same as the version of the multicast group protocol sent by the user terminal, If the version of the multicast group query protocol is the same as the version of the multicast group protocol that is sent by the user terminal, the multicast group query protocol is sent to the user terminal.

Further, in another embodiment of the method for controlling the multicast packet, the method further includes: after determining whether the version of the multicast group query protocol is the same as the version of the multicast group protocol sent by the user terminal, deal with:

If the version of the multicast group query protocol is the same as the version of the multicast group protocol sent by some user terminals, the multicast group query protocol version is converted to the multicast group query protocol. The inconsistent version of the multicast group protocol is added; the multicast group query before the conversion is sent to the user terminal that is added to the multicast group protocol and the version of the multicast group query protocol is the same; The converted multicast group query protocol is sent to the user terminal that is not in the version of the multicast group protocol and the version of the multicast group query protocol.

If the version of the multicast group protocol packet sent by the user terminal that is inconsistent with the multicast group query protocol version is different, the multicast group query protocol packet is converted into the multiple versions, and the converted version is converted. Multiple versions of the multicast group query protocol are sent to a corresponding plurality of different user terminals.

In this embodiment, when the version of the multicast group protocol sent by the user terminal is inconsistent with the version of the multicast query protocol, the version of the multicast group query protocol is converted, and the multicast before the conversion is performed. The group query protocol 4艮 and the converted multicast group query protocol are sent to the corresponding user terminals, ensuring that each user terminal receives the corresponding multicast group query protocol, ensuring the multicast service of the user terminal. compatible.

Referring to FIG. 8, another apparatus for controlling multicast packet according to the present invention is provided, which includes: a second receiving module 21, a second determining module 22, a second converting module 23, and a second transmitting module 24. The second receiving module 21 is configured to receive a multicast group query protocol packet. The second judging module 22 is configured to determine whether the user group exists in the multicast group, and when the user group exists in the multicast group, determine the version of the multicast group query protocol and the join multicast group protocol sent by the user terminal. The version is consistent. The second conversion module 23 is configured to convert the version of the multicast group query protocol to the joined multicast group when the version of the multicast group query protocol packet is inconsistent with the version of the multicast group protocol protocol message sent by the user terminal. The version of the protocol message. The second sending module 24 is configured to send the converted multicast group query protocol to the user terminal.

Further, in another embodiment of the apparatus 20 for controlling the multicast packet, the second sending The module 24 is further configured to send the multicast group query protocol message to the user terminal when the version of the multicast group query protocol is the same as the version of the multicast group protocol that is sent by the user terminal.

Further, in the embodiment of the apparatus 20 for controlling another multicast packet, the second conversion module 23 is further configured to join the multicast group protocol sent by the multicast group query protocol version and some user terminals. If the versions of the multicast group are the same, the version of the multicast group query protocol is converted to the version of the multicast group protocol that is inconsistent with the version of the multicast group query protocol. The second sending module 24 is also used to Sending the multicast group query before the conversion to the user terminal that is added to the multicast group protocol and the version of the multicast group query protocol; and the converted multicast group query protocol The user terminal that is sent to the multicast group protocol version 4 is inconsistent with the version of the multicast group query protocol.

When the version of the multicast group protocol packet sent by the user terminal that is inconsistent with the version of the multicast group query protocol is different, the second conversion module 23 converts the multicast group query protocol packet into the multiple versions. And transmitting, by the second sending module 24, the converted multiple versions of the multicast group query protocol message to the corresponding multiple user terminals.

In this embodiment, when the version of the multicast group protocol that is sent by the user terminal is inconsistent with the version of the multicast query protocol, the version of the multicast group query protocol is translated, and the multicast group query protocol before the conversion is performed. The message and the translated multicast group query protocol are sent to the corresponding user terminals, ensuring that each user terminal receives the corresponding multicast group query protocol and ensures the compatibility of the user terminal's multicast service.

The device for controlling the multicast packet mentioned above is an optical access network device, which may be an optical line terminal (OLT) or an optical network unit (ONU).

The method and the device embodiment of the foregoing multicast message control according to the present invention perform the conversion of the multicast protocol packet before being sent to the core network, so that the user terminal receives the multicast data packet of the preset multicast source. The security of the multicast service is improved. At the same time, the multicast protocol packet is converted before being sent to the user terminal, and converted into a protocol version format that can be correctly processed by the user terminal. The compatibility of the user terminal multicast service is high.

It should be understood that the above is only a preferred embodiment of the present invention, and thus the scope of the invention is not limited thereby, and the equivalent structure or equivalent process transformations made by the description of the invention and the drawings are used directly or indirectly. Other related technical fields are equally included in the scope of patent protection of the present invention.

Claims

Claim

A multicast packet control method, the method includes: receiving a multicast protocol packet sent by a user terminal;

When the version of the multicast protocol packet is not IGMPv3/MLDv2, the version of the multicast protocol packet is converted to IGMPv3/MLDv2 according to the preset control table entry; when yes, the multicast protocol is updated according to the preset control table entry. Multicast source address.

The method for controlling the multicast packet according to claim 1, wherein the method further comprises:

The converted multicast protocol or the updated multicast protocol is sent to the core network.

The multicast packet control method according to claim 1 or 2, further comprising: after receiving the multicast protocol packet sent by the user terminal,

Configure a local multicast data forwarding table.

The method for controlling the multicast packet according to claim 3, wherein after the sending the converted multicast protocol message or the updated multicast protocol message to the core network, the method further includes:

The multicast packet control method according to claim 4, wherein the multicast protocol is: adding a multicast group protocol or leaving a multicast group protocol.

A device for controlling multicast packets, the device includes: a first receiving module, configured to receive a multicast protocol packet sent by a user terminal;

a first determining module, configured to determine whether the version of the multicast protocol packet is IGMPv3/MLDv2;

The first conversion module is configured to convert the version of the multicast protocol message to IGMPv3/MLDv2 according to the preset control table entry when the version of the multicast protocol packet is not IGMPv3/MLDv2;

The update module is configured to be used according to the preset when the version of the multicast protocol packet is IGMPv3/MLDv2. The control table entry updates the multicast source address in the multicast protocol.

The device for controlling the multicast packet according to claim 6, wherein the device further comprises:

The device for controlling the multicast packet according to claim 6 or 7, wherein the device further comprises:

The device for controlling the multicast packet according to claim 8, wherein the device further comprises:

The forwarding module is configured to forward the received multicast data packet according to the local multicast data forwarding table.

The apparatus for controlling multicast packets according to claim 9, wherein the multicast protocol is: adding a multicast group protocol or leaving a multicast group protocol.

A method for controlling multicast packets, which is characterized by the steps of:

Receive multicast group query protocol 4艮文;

When there is a user terminal that joins the multicast group, it is determined whether the version of the multicast group query protocol is the same as the version of the multicast group protocol packet sent by the user terminal. If the version is different, the multicast group query protocol is used. Converted to the version of the multicast group protocol that is added to the multicast group protocol;

The method for controlling the multicast packet according to claim 11, wherein the determining whether the version of the multicast group query protocol is the same as the version of the protocol group that is sent by the user terminal is :

When the packets are consistent, the multicast group query protocol is sent to the user terminal.

The multicast packet control method according to claim 11, wherein the determining the version of the multicast group query protocol and the version of the multicast group protocol message sent by the user terminal are as follows: Whether it is consistent or not includes:

When the packets are partially consistent, the multicast group query protocol version is converted to the multicast group protocol that is inconsistent with the version of the multicast group query protocol.

A device for controlling multicast packets, the device includes: a second receiving module, configured to receive a multicast group query protocol packet;

The second judging module is configured to determine whether there is a user terminal that joins the multicast group; and when there is a user terminal that joins the multicast group, determine the version of the multicast group query protocol and the join multicast group protocol sent by the user terminal. Whether the packet version is consistent;

The second conversion module is configured to convert the version of the multicast group query protocol to the join multicast group protocol when the version of the multicast group query protocol packet is inconsistent with the version of the join multicast group protocol sent by the user terminal. 4 versions of the text;

The second sending module is configured to send the converted multicast group query protocol packet to the user terminal.

The apparatus for controlling the multicast packet according to claim 14, wherein the second sending module is further configured to: join the multicast group protocol sent by the user terminal in the version of the multicast group query protocol message When the versions are the same, the multicast group query protocol is sent to the user terminal.

The device for controlling the multicast packet according to claim 14, wherein the second conversion module is further configured to: join the multicast group sent by the version of the multicast group query protocol message and some user terminals. When the version of the protocol is the same, the version of the multicast group query protocol is converted to the version of the multicast group protocol that is inconsistent with the version of the multicast group query protocol.

The second sending module is further configured to send the multicast group query message before the conversion to the joining group. The user terminal whose version is the same as the multicast group query protocol packet version; and the translated multicast group query protocol packet is sent to the multicast group protocol packet version and the multicast group query protocol. User terminals with inconsistent versions.